Mechanical movement



L. RosEwi MECHANICAL MOVEMENT.

APPLICATION FILED AUGJ, 192l- Z mm mw 1m.. m 2 V I MW J v -d2 m m t 0: mm

L. ROSEN.

MECHAN|CAL MOVEMENT.

APPLICATION FILED AUG.-1, 1921.

Patented Aug. 15, 1922.

2 SHE'ETSSHEET 2- gwumal'oc Lei/i5 Rafe/2 LOUIS aosnlv, or nne nwarnn, oononano.

MECHANICAL MOVEMENT.

Application filed. August 1, 1921. Serial No. 488,859.

To all whom it may concern: 7

Be it known that 1, Louis RosnN, a citizen of the United States, residing at Edgewater, county of Jefferson, and State of Colorado, have invented certain new and useful Improvements in Mechanical Movements; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon,which form a part of this specification.

This invention relates to a mechanical movement of the type by which oscillatory movement can be converted into rotary movement in one direction and has special reference to a rolling chair for invalids in which the chair is propelled by means of power derived from the rocking motion imparted thereto by the back and forth movement of the invalids body.

It is frequently the case that cripples and invalids who have lost the use of their limbs nevertheless retain acomparatively strong and active body' and that they can rock themselves to and fro with considerable force. Although chairs of various kinds are made for the use of invalids and cripples, some operated by the hands alone and others by the feet alone, yet asfar as I am aware there are no chairs made that can be operated by the rocking of the body alone. i

It is the object of my invention to provide a rolling chair that can be operated by cripples or invalids who have lost the use of their limbs and by means of which they may be able to move from place to place by power derived from the movement of their bodies.

My invention can be best understood by reference to the accompanying drawings in which- Fig. 1 is a side elevation of my rolling chair with parts broken away.

Fig. .2 away and part in section taken'on line 2-2 l ig; 3 is a detail view taken online 3. 3, Fig.2. s

Fig. 4 is a side elevation of a boat equipped with my propelling device suitably modified, and

several figures.

means it is secured tothe ends of the forked is an end elevation partly broken Fig. 5 is an end elevation of thexboat shown in Fig. 4. I g

The same reference numerals will be used to indicate the same, parts throughout the In Fig. 1, which illustrates the preferred embodiment of my invention, 1 represents my improved rolling chair in its entirety, the chair member 2 which is provided with the usual seat, back and arm rest, is pivotally mounted at 3between the two sides t and 5 of the main supporting frame, which .is indicated as a whole by the numeral 6.

The supporting frame 6 is mounted on three wheels F, R and Rf of which F is the front or steering wheel and R and R are the rear wheels, one of which is keyed to the axle 7 andserves as the driver. The front wheel F is mounted on a spindle 8. by which member 9- which has a shank 10 extending through an inwardly projecting bearing 11 secured to frame6. Secured to the top of shank 10 is a universal joint 12 towhich a steering post 13 bearing a steering wheel,

1a is connected. ,Thelower portions of frames 4: and 5 are provided withbearings 15 and 16 in whichis rotatably mounted the axle 7, ball or roller bearings being employed in the usual wayr; 1

Keyed to the-axle 7 on the inner side of bearings'15 'and'16 are gear wheels 17. R0-

tatably mounted ontheaxle 7 and held in placether eon by means of collars'18 areftwo gear wheels 19 and 20. A ratchet mechanismis provided between gearwheels 17 and, gear wheels 19 and 20in order that the gears 19 and 20 when turned in a direction that would cause the chair to move backward, will be freely rotatable and when r0 1 tated in the opposite direction will engage with the gears 17 and rotatezthem. 'Any one end of considerable thus permit the balls'to roll up on the shallow portion and become wedgedtflgainst the v surfaceof gears'l'l'. Mounted in suitable bearings in the lower portion of frame 6 IS a second shaft 23 which has IlOIl rotatably so indicated in Fig. 3.

cured thereto, near the ends thereof, gear wheels 24 which mesh with gear wheels 17' but are somewhat larger in diameter. liotatably secured to shaft 23 and held in place against the sides of wheels 24: by means of collars 18, or other suitable means, are gear wheels 25 and 26, which areidentica-lwith gear wheels 19 and 20. A ratchet mechanism similar to theone employed between wheels 19, and wheels 17 is provided between wheels 25, 26 and wheels 24. Secured to the bottom of the chair portion 1 by means of bolts 27' are two gear sectors 28 which are pivoted on shaft 3 and have their gear teeth engaging with gears 19 and and 20 and 26 respectively in the manner Shafts 3, 7 and 23 form the vertices of an isosceles triangle and as sectors 28 are pivotally mounted on shaft 3', their geared peripheries are always in mesh with gears 19 and 25 and 20 and 26 as pointed out above.

One of the rear wheels only is keyed to shaft 7 while the other is freely rotatable thereon, the reason for this being that in turning a corner one traverses a greater distance than the other and that, therefore, relative rotation between the wheels is necessary.

The operation of my device is as follows:

Let us suppose that a person is sitting in the chair 1 with his hands grasping the wheel 14 and his feet resting on the upper surface of frame 6 and let the person so seated move his body backwardly, he will thereby move the chair backwardly about the pivot 8 and the gear sector 28 will move forwardly in the direction of arrow X (Fig. Gear wheels 19 and 25 will at the same time be rotated in the direction indicated by the arrows shown in full; When gear wheel 19 is rotated'in the direction indicated by the arrow shown in full, balls 22 will be moved to the shallow portionof groove 21 and become wedged between the bottom of the grooves and the side of wheel 17, locking the two wheels together and causing them to rotate as one. Gear wheel 17 will, of course, cause gear wheel 21 to rotate in the direction indicated by the broken arrow (Fig. Asgear sector 28 is in engagement with the teeth of gear 25, the latter 0 will rotate in the same direction as gear 19.

operative and the clutch between wheels 17 'ancll l9 TIIOPBI'atIVEWlYGBGbYShaft 7 will be rotated, through the medium of gears 25, 2 1- and 17, in the same direction as-before.

From the above it .will be noticed that,

the chair will be moved in the same direction regardless of the direction in which the chair moves about the pivot 3.

I have shown gear 2 1 somewhat larger in diameter than gear 17 while gears 19 and 25 are. of equal diameter, the reason for this is that we have the greatest propelling power exerted when the chair is rocked backwardly in starting and as the chair is gotten under way, the forward rocking of the chair acts through the greater gear ratio with less force but with greater speed.

l have shown my chair equipped with two gear sectors 28 and a duplicate set of driving gears but it is evident that my chair will operate with one gear sector and one set of gears and I do not intend that the disclosure, which shows the driving gears in duplicate, shall be understood as a limitation in this respect but merely as illustra tive.

ily device is especiallyv well adapted to be applied to boats and canoes for propelling the same and in Figs. 41 and 5 l have shown a boat equipped with a propelling device embodying the principle of my present invention. but modified slightly to adapt it to this use. Boat 100 has at tached near the center thereof a propelling device which is indicated as a whole by the numeral 101: this device is substantially the same as the one used in connection with my chair. The wheels of the chair have been replaced by paddle wheels 102 which are both keyed to the shaft 103 instead of one only, as in the case of the chair. In place of the chair I have substituted 3. frame 10 1, each end of which is provided with a bar 106 to be grasped by the hand of the operator in the manner shown. Frame 104 is pivotally mounted on shaft 107 and has connected to each side thereof two segmental gear members 28, whose teeth cooperate with a set of gears in the manner shown in F igs. 1, 2 and 3 in which figures shaft 7 corresponds to shaft 103 in Fi 4-. The power transforming and transmitting gearing has not been shown in detail in Figs. 1 and 5 but it is to be understood that the same arrangement is to be employed here as is. described in connection with the chair.

The uses specifically enumerated are by no means the only ones to which my device is adapted. It can be embodied in self propelled vehicles for children, in toys of various kinds and can be used to convert oscillatory movement into rotary movecan be used in the same manner as any ordinary rolling chair, for the reason that when the chair is pushed ahead the ratchets willnot operate and hence the chair portionwill remain stationary.

rlaim as my invention is: v

1. A rolling chair comprising a supporting frame (6), a guide wheel (F) pivotally attached to said frame (6) means (12, 13, 14) for controlling said guide wheel, a pair of suppcrtingwheels (R, R) rotatably attached to said frame, a chair. (1) supported on pivots (3) spaced from but parallel with the pivots (7) upon which said sup porting wheels rotate and adapted to be oscillated back and forth about its pivot, and means comprising a gear sector (28) attached to said chair and engaging with two gear wheels (19, 25) rotatably connected to two parallel spaced pivots (7, 23), cooperating gear wheels (17, 2& mounted on said last named pivots, and ratchet means between the gears on each pivot, whereby the oscillatory movement of said chair will be changed to a rotary movement in one direction and transmitted to one of said supporting wheels for the purpose of propelling said rolling chair in a forward direction.

2. A rolling chair comprising a supporting frame (6) a guide Wheel (F pivotally connected thereto, means (12, 13, 14C) for controlling said guide wheel, an axle pivotally connected to said frame, a pair of supporting wheels (R, R) mounted on said axle one of said wheels being rotatably (23) .mounted in said frame'and parallel with said first namedaxle, a gear (17) nonond gear (19) also mounted on said axle iii-juxtaposition to said first named gear v (17), ratchet means between said gears, a gear (24) mounted on said second axle and engaging with the first named gear (17), a second gear (25) mounted on said second named axle (23), ratchet means besecured to said axle and the other non-i rotatably attached thereto, a second axle I 7 Having described my invention what I 40 .rotatably mounted on said axle (7) a sec pivot on said third axle, said gears and ratchets having such relation one to the other that the oscillatory motion of said gear sector about its.pivotwillbetrans formed into rotary motion in one direct-ion. I

and transmittedto said first named axle.

In testimony whereof I afiix my signature.

LOUIS ROSEN. 

